Wicked-cool non-keyboard text-entry

Dasher is like a video-game for rapid text-entry without a keyboard. The animation on this link does a better job of explaining it than I can. The idea is that you tap the first letter, then all the legal letters that could follow it zoom up under your stylus. Choose one of those and the legal follow-ons zoom up, and so on. Looks really fast.

Link

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(Thanks, Matthew!)